Research Center for Engineering of
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Title: LDA measurements of unsteady velocity field for decelerated swirling flows in a discharge cone
Published In: International Conference on Energy and Environment, published in Sc. Bulletin of Univ. Politehnica of Bucharest, Series D, vol. 76(2)
Description: The discharge cone of hydraulic turbines remains the subject to numerous investigations since the flow unsteadiness developed at regimes far from the best efficiency point is responsible for large pressure pulsations or breakdowns of different components of the turbine. A special test rig was developed in laboratory in order to investigate the flow downstream the runner and to analyze different methods of control. The paper presents our experimental investigations of velocity field with LDA system. First is presented the setup in order to obtain this type of measurements and second is presented the mean and instantaneous flow field obtain from the measurements. The flow field obtain from measurements with phase average method will help us to understand the flow physics at the exit of the runner in the discharge cone. The main features obtained shown the flow non uniformity at the runner exit and the shape of the vortex rope in the discharge cone.
ISBN: 
ISSN: ISSN 1454-2358
DOI: 
Publication year: 2014
Keywords: 
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Authors: BOSIOC Ilie Alin , TANASA Constantin ,
Type: National Journal Article
Link: http://scientificbulletin.upb.ro/rev_docs_arhiva/fulle14_841085.pdf
Laboratory: Numerical Simulation and Parallel Computing Laboratory
Institution: UPT